The Naval Air Station Patuxent River Tester reports that the building, which has historic significance dating back to World War II, says that the EIFSs include a variety of insulating materials that are used when the time and cost to insulate from inside are problematic. One option, according to commentary in the story, is infiltration membranes.

These are thin sheets of material that prevent the air movement around walls that create drafts. The work is expected to be completed by the end of August, according to the story.